Watch The Big Bang Theory Season 5 Episode 13 online via TV Fanatic with over 5 options to watch the The Big Bang Theory S5E13 full episode. Affiliates with free and paid streaming include Amazon, iTunes, Vudu, YouTube Purchase, and Google Play.
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Leonard asks Penny out on a date this week, causing everyone else to wonder how life might change it it goes well. It's the show's 100th episode!